Blood Moon

This morning we experienced a total eclipse of the moon, commonly referred to as a "blood moon". The moon falls entirely in the shadow of the earth and the light refracting through the earth's atmosphere produces a reddish tint to the moon. The origin of the name blood moon is thought to be religious.

As interesting, this is the first of four total eclipses, called a tetrad, which will occur on 10/8 this year and 4/4 and 9/28 next.